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Personnel locator

  • US 4,225,953 A
  • Filed: 09/29/1978
  • Issued: 09/30/1980
  • Est. Priority Date: 09/29/1978
  • Status: Expired due to Term
First Claim
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1. A personnel locating system, comprising:

  • a plurality of transmitter units adapted to be worn or carried by personnel whose locations are to be determined, each of said transmitter units adapted for transmitting signals having a common frequency during separate predetermined time intervals on a recurring basis;

    a plurality of receiving means for mounting in rooms or areas to be monitored for locating the personnel, each of said receiving means operative to receive the signals transmitted by any of said transmitter units;

    decoder means including time reference means and operative in response to signals received by said receiving means during said predetermined time intervals to produce signals indicative of the location of said transmitter units; and

    display means connected to receive said location indicative signals and operative in response thereto to display the room or area locations of the personnel.

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